I wasn't in on this game, but I'm friends with a bunch of kids playing at university and through their usual blundering tactics it fell upon the one female PC (being played by the DM's gf) to seduce a noble and get information out of him. At the pivotal moment
DM: ok, make a roll to see if you manage to seduce the noble
gf: wtf? I'm going to unbutton by blouse. There's a DC for that?
slight pause from everyone in the room
DM: *shrug* works for me!